My CI tests are breaking on this command: DFX_VERSION=0.9.3 sh -ci "$(curl -fsSL https://sdk.dfinity.org/install.sh)"
It looks like this URL is returning a 404: https://github.com/dfinity/sdk/releases/download/0.9.3-nomusl.2/dfx-0.9.3-nomusl.2-x86_64-linux.tar.gz
This seems to have just happened recently (maybe with 24-48 hours).